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M112 Contour transition between elements
Heidenhain TNC (ISO) M-code · Mill
Older iTNC 530 function that inserts a transition between contour elements within a tolerance. Reset with M113.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M112 T A
Addresses
| Address | What it does |
|---|---|
T | Contour tolerance |
A | Limit angle |
How it works
Modal. Cancel with M113.
Example program
N40 M112 T0.01 *
N50 G01 X+50 Y+20 F2000 *
N60 M113 *
N50 G01 X+50 Y+20 F2000 *
N60 M113 *
Example is in inch. Check offsets and clearances first.
Watch out for
- Not used on TNC 640 or TNC7. Use cycle 32 TOLERANCE, ISO G62, instead.
Related codes
M112 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Secondary spindle air blast on |
| Doosan (Fanuc) | B-axis curvic & disc clamp |
| Mazak (EIA) | External tool compensation EXT start |
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